The agreement is an important concept in grammar and a source of many spelling mistakes. The nouns must correspond to their verbs, which means that a single name requires a singular verb and a plural noun a plural verb. The pronouns are not and both are unique, although they seem to relate to two things. Lately, many academic and popular publications have begun to accept the use of the pronoun « them » as singular pronouns, which means that authors use « them » to respond to individual themes in order to avoid sexist pronouns. Although the pronoun « she » is only a plural pronoun in some style guides, the APA encourages authors to « use » them as singular or plural pronouns with the specific intention of adopting gender diversity. Article 4. As a general rule, use a plural verb with two or more subjects when they are by and connected. In standard English, for example, you can say I am or it is, but not « I am » or « it is. » This is because the grammar of the language requires that the verb and its subject coincide personally. The pronouns I and him are respectively the first and third person, just as the verbs are and are.
The verbage form must be chosen in such a way as to have the same person as the subject, unlike the fictitious agreement based on meaning.   In American English, for example, the expression of the United Nations is treated as singular for the purposes of concordance, although it is formally plural. Although pronouns are useful in helping authors avoid repetitions, they should be used sparingly to keep the meaning of the sentence clear. Take a look at this sentence: `If subjects are connected by or yet, etc. the verb corresponds to the nearest subject. (Proximity rule)  The predicate corresponds in number to the subject, and if it is copulatory (i.e. it consists of a noun/adjective and a verb that is in number agreeing with the subject). For example: A k-nyvek ardek voltak « Books were interesting » (a: this: « k-nyv »: book, « erkes »: interesting, « voltak »: were): the plural is marked on the theme as well as on the addjectival and the copulatory part of the predicate. Article 8. With words that give pieces – z.B a lot, a majority, some, all — that were given above in this section, Rule 1 is reversed, and we are directed after the no bite after that of. If the name is singular, use a singular verb.
If it`s plural, use a plural verb. However, if the names suggest an idea or refer to the same thing or the same person, the verb is singular.  In English, defective verbs usually show no match for the person or number, they contain modal verbs: can, can, should, should. Languages cannot have a conventional agreement at all, as in Japanese or Malay; barely one, as in English; a small amount, as in spoken French; a moderate amount, such as in Greek or Latin; or a large quantity, as in Swahili. In English, this is not a common characteristic, although there are certain determinants that appear only with singular or plural names: in substantive sentences, adjectives do not show agreement with the noun, although pronouns do. z.B. a szép k-nyveitekkel « with your beautiful books » (« szép »: nice): the suffixes of the plural, the possessive « your » and the fall marker « with » are marked only on the name. 10. Collective names are words that involve more than one person, but are considered singular and adopt a singular verb, such as group, team, committee, class and family. An agreement based on grammatical numbers can be made between verb and subject, as in the case of the grammatical person discussed above.
In fact, the two categories are often mixed in conjugation patterns: there are specific forms of verbs for the first-person singular, the second plural, etc.